公开(公告)号：US20080175711A1

公开(公告)日：2008-07-24

申请号：US12014844

申请日：2008-01-16

申请人： Kristian Balschmidt Godsk ,  Thomas Steiniche Bjertrup Nielsen

发明人： Kristian Balschmidt Godsk ,  Thomas Steiniche Bjertrup Nielsen

IPC分类号： F03D7/00 ,  F01D5/14

CPC分类号： F03D1/0633 ,  F03D7/0224 ,  F03D80/00 ,  F05B2240/122 ,  F05B2240/30 ,  F05B2260/96 ,  Y02E10/721 ,  Y02E10/723

摘要： The invention relates to a pitch controlled wind turbine blade including a pressure surface side and a leeward surface side, where the surfaces establishes a leading edge and a trailing edge. The blade includes a turbulence generating mechanism where the mechanism is placed on the leeward surface sides of the wind turbine blade and at the outer section of the wind turbine blade in direction of the blade tip. The invention further relates to a wind turbine including at least two pitch controlled wind turbine blades and a pitch controlling mechanism for pitching the blades. The blades include a turbulence generating mechanism where the mechanism is placed on the leeward surface sides of the wind turbine blades and at the outer section of the wind turbine blades in direction of the blade tips.

摘要翻译： 本发明涉及一种包括压力表面侧和背风表面侧的俯仰控制的风力涡轮机叶片，其中表面形成前缘和后缘。 叶片包括湍流发生机构，其中机构被放置在风力涡轮机叶片的背风表面侧上，并且在叶片尖端的方向上放置在风力涡轮机叶片的外部。 本发明还涉及一种风力涡轮机，其包括至少两个俯仰控制的风力涡轮机叶片和用于俯仰叶片的俯仰控制机构。 叶片包括湍流产生机构，其中机构被放置在风力涡轮机叶片的背风表面侧上，并且在叶片尖端的方向上放置在风力涡轮机叶片的外部。

公开(公告)号：US06695588B1

公开(公告)日：2004-02-24

申请号：US10009463

申请日：2002-01-16

申请人： Thomas Steiniche Bjertrup Nielsen

发明人： Thomas Steiniche Bjertrup Nielsen

IPC分类号： F03B102

CPC分类号： F03D80/00 ,  F03D13/20 ,  F05B2200/23 ,  F05B2240/95 ,  F05B2260/96 ,  Y02E10/721 ,  Y02E10/726 ,  Y10S416/06 ,  Y10S416/50

摘要： Damping of oscillations of the first bending mode of a wind turbine is performed means of one or more containers partly filled with a liquid for damping oscillations of the first natural bending frequency of the wind turbine. The damping means comprises a plurality of box shaped containers having a square cross section and being partly filled with liquid so as to provide a unidirectional damping with a logarithmic decrement of oscillations of the first natural bending frequency of the wind turbine of at least 4-8%. For off-shore wind turbines, the combined excitation of the wind and sea waves requires more damping, the damping is preferably equivalent to a logarithmic decrement of 10-15%. Furthermore, the invention relates to damping of oscillation of the second bending mode of a wind turbine and to the combined damping of oscillations of the first as well as the second bending mode of the wind turbine.

摘要翻译： 执行风力涡轮机的第一弯曲模式的振荡的阻尼是由一个或多个容器部分地填充有用于阻止风力涡轮机的第一自然弯曲频率的振荡的液体的装置。 阻尼装置包括多个具有正方形横截面且部分地填充有液体的盒形容器，以便提供单向阻尼，其中风力涡轮机的第一自然弯曲频率的振荡的对数递减至少为4-8 ％。 对于离岸风力涡轮机，风和海浪的组合激励需要更多的阻尼，阻尼优选等于10-15％的对数减量。 此外，本发明涉及风力涡轮机的第二弯曲模式的振荡的阻尼以及风力涡轮机的第一和第二弯曲模式的振荡的组合阻尼。